assimp/code/ScaleProcess.cpp

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

Copyright (c) 2006-2019, assimp team


All rights reserved.

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following disclaimer.

* Redistributions in binary form must reproduce the above
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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*/
#ifndef ASSIMP_BUILD_NO_GLOBALSCALE_PROCESS

#include "ScaleProcess.h"

#include <assimp/scene.h>
#include <assimp/postprocess.h>

namespace Assimp {

ScaleProcess::ScaleProcess()
: BaseProcess()
, mScale( AI_CONFIG_GLOBAL_SCALE_FACTOR_DEFAULT ) {
    // empty
}

ScaleProcess::~ScaleProcess() {
    // empty
}

void ScaleProcess::setScale( ai_real scale ) {
    mScale = scale;
}

ai_real ScaleProcess::getScale() const {
    return mScale;
}

bool ScaleProcess::IsActive( unsigned int pFlags ) const {
    return ( pFlags & aiProcess_GlobalScale ) != 0;
}

void ScaleProcess::SetupProperties( const Importer* pImp ) {
    mScale = pImp->GetPropertyFloat( AI_CONFIG_GLOBAL_SCALE_FACTOR_KEY, 0 );
}

void ScaleProcess::Execute( aiScene* pScene ) {
    if ( nullptr == pScene ) {
        return;
    }

    if ( nullptr == pScene->mRootNode ) {
        return;
    }

    traverseNodes( pScene->mRootNode );
}

void ScaleProcess::traverseNodes( aiNode *node ) {
    applyScaling( node );
}

void ScaleProcess::applyScaling( aiNode *currentNode ) {
    if ( nullptr != currentNode ) {
        currentNode->mTransformation.a1 = currentNode->mTransformation.a1 * mScale;
        currentNode->mTransformation.b2 = currentNode->mTransformation.b2 * mScale;
        currentNode->mTransformation.c3 = currentNode->mTransformation.c3 * mScale;
    }
}

} // Namespace Assimp

#endif // !! ASSIMP_BUILD_NO_GLOBALSCALE_PROCESS